dark ribbon of weak hydrogen ion emissions tagged posts

This image shows the same map of H3+ brightness as in redmap.jpg. However, here, we have overlain three different measurements of Jupiter’s magnetic equator. The first, in blue (with the broadest dashes), is the best past estimate of what was thought to be the equator using ultraviolet light; the second, in red and yellow (with medium dashes) is the location of the dark ribbon seen in this map; the third is the new measurement of the magnetic equator recently measured by the Juno spacecraft. This magnetic measurement shows how closely the dark ribbon follows Jupiter’s magnetic equator.
Credit: University of Leicester